It depends on what is the object, how are computers connected, etc.
For instance, if you have, say, z-letter for remote PC, and you wish to get the excel file from remote PC, you may use :

o=GETOBJECT("z:\excel_file_name.xls")
o.application.visible=.t.
o.application.windows(1).visible=.t.
.....

Though here one might use createobj as well.

\>how to call GetObject() from remote computer ?
>Who now ?